Mr Lavrov told the conference Mr Biden's insistence that the Syrian leader step down was counterproductive.
Mr Parsons apologised but initially refused to step down as leader, a post he had held for nine years.
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Similar questions last week caused former Fannie Mae chief Jim Johnson to step down as leader of the vice presidential search team for presumptive Democratic nominee Barack Obama.
At a news conference in Seoul, Woo Suk Hwang said he will step down as leader of the South Korean cloning team, and he apologized for his actions.
And we have held up, for instance, the model of Yemen, where you had a leader step down from power in an orderly fashion and then a road map towards elections.
There was a perceived 30% threshold for him in this race, with some suggestions that he may have to step aside as leader of a new government if he fails to reach this level.
But Mr Farage's decision to step down as leader for a tilt at the bigger prize of a seat at Westminster backfired when he failed to unseat Commons Speaker John Bercow in Buckingham, leaving him in a curious state of limbo.
As every professional I've ever asked has said, when a leader trusts them more than they expected, they step up to show the leader that they were worthy of her trust.
Baseball's all-time saves leader will step aside with his skills intact but his desire waning.
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In Syria, he became the first Roman Catholic leader to step inside a mosque and spoke of the common bonds between Islam and Christianity.
Mr Trimble is a stubborn fighter, and is said to be determined not to step down as party leader even if he is defeated.
He believed that Mr Clark now thought the UUP leader should step down but wished that the manner of his going should not damage the party.
Musharraf has said repeatedly he will step down as military leader before the next term begins on November 15 and has promised to hold parliamentary elections by January 15.
But Pope Benedict could finally be best remembered for his lonely decision to step down voluntarily as leader of the world's 1.3 billion Roman Catholics and CEO of the minuscule Vatican City State - a decision made because he simply felt he was no longer up to the job.
These steps would be just as beneficial if an owner died, an a new leader had to step in.
Cornyn took the step on behalf of Majority Leader Bill Frist, who was delivering a commencement address in South Carolina.
When Nasser and Sadat died, the collective military leadership knew its next step: have another military leader succeed his fallen predecessor.
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But assuming it does fall - and few doubt that it will - what then will be the next step of the Tamil Tiger leader, Velupillai Prabhakaran, who has run his organisation over the years with a vice-like grip?
Such experience will allow them to step up their game as a leader in all organizations.
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Today at their annual congress the TUC's general secretary took the first step on a path every political leader, except perhaps Alex Salmond, is sure to follow.
Now he's not gone, but he had to step aside as the House majority leader when he was indicted in Texas on charges of violating state campaign finance laws.
According to her new year-long study of over 4, 000 college-educated professionals and 268 senior executives, conducted by CTI and in partnership with Marie Claire magazine, looking like a leader is the first step to becoming one.
There is growing concern that NATO ground forces will be sent in if Libyan leader Moammar Gadhafi does not step down.
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Alert to the sensitivity of the issue, Mr Salmond and his cohorts declined to step into traps laid by the Labour leader.
As the unrivaled global technology leader, Apple needs to step up its pressure on Foxconn and raise its supply chain standards to remedy labor injustices.
SARAJEVO, Bosnia-Herzegovina (CNN) -- Bosnian Serb leader Radovan Karadzic may soon step out of public office and not be seen or heard from again, sources close to Bosnia's civil peace coordinator Carl Bildt told CNN Sunday.
All of this, in the view of the German leader, was a "considerable step forward".
Key opposition leader Benazir Bhutto welcomed the belated step, but she said her party had yet to accept him as head of state.
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